Cycling

The Danish cyclist Michael Rasmussen has admitted to 12 years of doping after making a tell-all deal with anti-doping authorities. Rasmussen said in a televised news conference that he took performance-enhancing drugs between 1998 and 2010, both before and after he served a suspension for evading doping controls. In 2007 Rasmussen was removed from the Tour de France by his team while leading the overall standings for lying about his whereabouts – information required under anti-doping regulations. He served a two-year suspension between 2007 and 2009. The revelation comes after Lance Armstrong admitted he took performance-enhancing drugs during all seven of his Tour de France victories, saying he was part of a doping culture in the sport. Reuters

Tennis

Andy Murray will miss Great Britain's Davis Cup tie against Russia at Coventry's Ricoh Arena on 5-7 April to focus on the clay season. The Australian Open finalist has decided to concentrate on his weakest surface immediately after the hard court tournaments in Indian Wells and Miami have been completed in March. The Scot is determined to make inroads into the advantage his main rivals, Novak Djokovic, Roger Federer and Rafael Nadal, have traditionally enjoyed on clay. Murray said he would "definitely be available to play the next Davis Cup tie" in September. Jamie Baker is likely to be the team's No1 against Russia, with James Ward, Josh Goodall and Dan Evans competing for the other singles spot. Colin Fleming and Jonny Marray are a potential doubles pairing. PA

Football

The Football Association has decided against extending Eden Hazard's ban for kicking a ballboy during Chelsea's Capital One Cup semi-final against Swansea. Hazard was sent off for kicking 17-year-old Charlie Morgan as he attempted to retrieve the ball during a 0-0 draw at the Liberty Stadium. It had been suggested that the FA was considering handing down a long suspension to the Belgian but the governing body said in a statement: "Following a hearing earlier today, an independent regulatory commission was of the opinion the existing three-match sanction for this offence was sufficient." PA

Golf

The former world No1 Vijay Singh pulled out of the Phoenix Open in Scottsdale before the start of play on Thursday after admitting he had used a deer antler spray which has previously been found to contain a banned growth hormone. The Fijian, facing the possibility of a worldwide suspension, cited a back injury for his withdrawal. He was 27th in last week's Farmers Insurance Open at Torrey Pines and, in his only other start this season, was 20th at the Sony Open in Hawaii. PA